diff --git a/htdocs/barcode/printsheet.php b/htdocs/barcode/printsheet.php
index 373effecbe8..56361b948f0 100644
--- a/htdocs/barcode/printsheet.php
+++ b/htdocs/barcode/printsheet.php
@@ -226,7 +226,7 @@ if ($action == 'builddoc') {
 						'code'=>$code,
 						'encoding'=>$encoding,
 						'is2d'=>$is2d,
-						'photo'=>$barcodeimage	// Photo must be a file that exists with format supported by TCPDF
+						'photo'=>!empty($barcodeimage) ? $barcodeimage : ''	// Photo must be a file that exists with format supported by TCPDF
 					);
 				}
 			} else {
diff --git a/htdocs/comm/action/index.php b/htdocs/comm/action/index.php
index e730243bfbf..9d84e205f2b 100644
--- a/htdocs/comm/action/index.php
+++ b/htdocs/comm/action/index.php
@@ -2048,7 +2048,7 @@ function show_day_events($db, $day, $month, $year, $monthshown, $style, &$eventa
 							}
 						}
 						if (!empty($contact_id) && $contact_id > 0) {
-							if (!is_object($cachecontacts[$contact_id])) {
+							if (empty($cachecontacts[$contact_id]) || !is_object($cachecontacts[$contact_id])) {
 								$contact = new Contact($db);
 								$contact->fetch($contact_id);
 								$cachecontacts[$contact_id] = $contact;
diff --git a/htdocs/comm/mailing/cibles.php b/htdocs/comm/mailing/cibles.php
index dde6e3204d6..c39e4fbf834 100644
--- a/htdocs/comm/mailing/cibles.php
+++ b/htdocs/comm/mailing/cibles.php
@@ -675,7 +675,7 @@ if ($object->fetch($id) >= 0) {
 
 				// Date last update
 				print '<td class="center nowraponall">';
-				print dol_print_date($obj->tms, 'dayhour');
+				print dol_print_date(dol_stringtotime($obj->tms), 'dayhour');
 				print '</td>';
 
 				// Status of recipient sending email (Warning != status of emailing)
diff --git a/htdocs/comm/mailing/index.php b/htdocs/comm/mailing/index.php
index d3ebc379b55..cf3d18adbac 100644
--- a/htdocs/comm/mailing/index.php
+++ b/htdocs/comm/mailing/index.php
@@ -101,7 +101,7 @@ if (is_resource($handle)) {
 
 				$qualified = 1;
 				foreach ($mailmodule->require_module as $key) {
-					if (!$conf->$key->enabled || (!$user->admin && $mailmodule->require_admin)) {
+					if (empty($conf->$key->enabled) || (!$user->admin && $mailmodule->require_admin)) {
 						$qualified = 0;
 						//print "Les pr�requis d'activation du module mailing ne sont pas respect�s. Il ne sera pas actif";
 						break;
@@ -176,7 +176,7 @@ if ($result) {
 
 			print '<tr class="oddeven">';
 			print '<td class="nowrap">'.$mailstatic->getNomUrl(1).'</td>';
-			print '<td>'.dol_trunc($obj->title, 38).'</td>';
+			print '<td>'.(!empty($obj->title) ? dol_trunc($obj->title, 38) : '').'</td>';
 			print '<td class="center">'.dol_print_date($db->jdate($obj->date_creat), 'day').'</td>';
 			print '<td class="center">'.($obj->nbemail ? $obj->nbemail : "0").'</td>';
 			print '<td class="right">'.$mailstatic->LibStatut($obj->statut, 5).'</td>';
diff --git a/htdocs/core/boxes/box_graph_nb_ticket_last_x_days.php b/htdocs/core/boxes/box_graph_nb_ticket_last_x_days.php
index b75d0752334..5a6dbbedd37 100644
--- a/htdocs/core/boxes/box_graph_nb_ticket_last_x_days.php
+++ b/htdocs/core/boxes/box_graph_nb_ticket_last_x_days.php
@@ -120,7 +120,7 @@ class box_graph_nb_ticket_last_x_days extends ModeleBoxes
 				while ($i < $num) {
 					$objp = $this->db->fetch_object($resql);
 					while ($minimumdatecformated < $objp->datec) {
-						$dataseries[] = array('label' => dol_print_date($minimumdatecformated, 'day'), 'data' => 0);
+						$dataseries[] = array('label' => dol_print_date($minimumdatec, 'day'), 'data' => 0);
 						$minimumdatec = dol_time_plus_duree($minimumdatec, $intervaltoadd, 'd');
 						$minimumdatecformated = dol_print_date($minimumdatec, 'dayrfc');
 					}
@@ -130,7 +130,7 @@ class box_graph_nb_ticket_last_x_days extends ModeleBoxes
 					$i++;
 				}
 				while (count($dataseries) < $days) {
-					$dataseries[] = array('label' => dol_print_date($minimumdatecformated, 'day'), 'data' => 0);
+					$dataseries[] = array('label' => dol_print_date($minimumdatec, 'day'), 'data' => 0);
 					$minimumdatec = dol_time_plus_duree($minimumdatec, $intervaltoadd, 'd');
 					$minimumdatecformated = dol_print_date($minimumdatec, 'dayrfc');
 					$i++;
diff --git a/htdocs/hrm/class/position.class.php b/htdocs/hrm/class/position.class.php
index b685147a9b9..caf2ff00b03 100644
--- a/htdocs/hrm/class/position.class.php
+++ b/htdocs/hrm/class/position.class.php
@@ -395,10 +395,10 @@ class Position extends CommonObject
 			foreach ($filter as $key => $value) {
 				if ($key == 't.rowid') {
 					$sqlwhere[] = $key . '=' . $value;
-				} elseif (in_array($this->fields[$key]['type'], array('date', 'datetime', 'timestamp'))) {
-					$sqlwhere[] = $key . ' = \'' . $this->db->idate($value) . '\'';
 				} elseif ($key == 'customsql') {
 					$sqlwhere[] = $value;
+				} elseif (in_array($this->fields[$key]['type'], array('date', 'datetime', 'timestamp'))) {
+					$sqlwhere[] = $key . ' = \'' . $this->db->idate($value) . '\'';
 				} elseif (strpos($value, '%') === false) {
 					$sqlwhere[] = $key . ' IN (' . $this->db->sanitize($this->db->escape($value)) . ')';
 				} else {
diff --git a/htdocs/modulebuilder/index.php b/htdocs/modulebuilder/index.php
index b8810a2696d..0d2137928ac 100644
--- a/htdocs/modulebuilder/index.php
+++ b/htdocs/modulebuilder/index.php
@@ -3739,7 +3739,7 @@ if ($module == 'initmodule') {
 						print '</td>';
 
 						print '<td>';
-						print dol_escape_htmltag($menu['leftmenu']);
+						print !empty($menu['leftmenu']) ? dol_escape_htmltag($menu['leftmenu']) : '';
 						print '</td>';
 
 						print '<td class="tdoverflowmax300" title="'.dol_escape_htmltag($menu['url']).'">';